Unchained amp settings — Boss Katana 50 MkII
The Van Halen guitar tone for “Unchained”, dialed in for a Boss Katana 50 MkII with a Kramer The 84. Studio version, Fair Warning (1981), tuned to E♭ Standard
Frankenstrat (bridge humbucker) → MXR Phase 90 → Marshall 1959 Super Lead Plexi (Variac'd to ~90V) → MXR M-117 Flanger in FX loop
| Knob | Setting (0–10) |
|---|---|
| Gain | 7 |
| Bass | 5 |
| Mid | 7 |
| Treble | 6 |
| Presence | 6 |
| Reverb | 0 |
| Master | 7 |
01MXR Flanger
Run through FX loop if possible on Katana (use BOSS Tone Studio to route). Regen pushed high for the through-zero jet effect. If no FX loop access, run in front—tone will be slightly different but still flanged.
The Katana's Brown channel models the cranked Plexi voicing Eddie used. I pushed mids to 7 (vs original 6) because the Katana's Brown mode is slightly scooped compared to a real Variac'd Plexi under load. Treble dropped to 6 because your Kramer's Seymour Duncan humbucker runs hotter than Eddie's hand-wound PAF, which would push the high end harder. Gain at 7 gets the saturation without mud—Eddie's 'brown sound' came from power tube breakup, which the Brown amp type emulates.
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These settings are for a Boss Katana 50 MkII. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.
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